Machine for rolling wheel-blanks.



A. L. PUTNAM.

MACHINE FOR ROLLING WHEEL BLANKS.

APPLICATION FILED FEB. 14. I916- 1,208,831. Patented Dec. 19,1916.

2 SHEETSSHEET 2.

[72 V67) far 26604 fat/2am 3 M M M1 4- W450 below the MACHINE FOB ROLLING WHEEL-BLANKS.

Specification of Letters latent.

Patented Dec. 19, 1916.

Application filed February 14, 1816. Serial No. 78,162.

vid gage to convert the same to the desired variation in gage, and to this end the invention comprises the construction as hereinafter set forth.

In the-drawings: Figure 1 is a vertical central section partially in elevation; Fig. 2 is a section on line 2-2 Fig. 1; Fig. 3 shows the manner of en ging the blank; and Fig. 4 is a section of t e completed blank.

In the process of formin the blanks an original blank cut from s eet-metal of a uniform gage and the maximum thickness is rolled to thin certain portions thereof and to also enlar e the diameter. My improved machine per orms this operation expeditiously through the cooperation of pairs of conical rolls arranged on op osite sides of the blank with their axes ra ating from the center thereof.

As shown, A is a suitable frame, on which is mounted a pivot bearing B for engagin the center of the blank, which latter is pro erably cupped as indicated at G for en gement with said pivot, and D is a conica roll blank and mounted upon a supporting shaft E which engages a journal bearing F in the frame.

G is an end-thrust bearing for the shaft E beyond the bearing F, and H is a bevel arwheel mounted on the shaft and engaging a vel pinion I on a drive-shaft J.

is a conical roll above the blank, which is arly mounted on a shaft L in a ournal bearin M, having an end-thrust earing N an a bevel ear-wheel O in mesh with the bevel pinion on the shaft J. The upper shaft L is, however, longitudinal] and ustable and to this end the earing I; sli ably engages guideways Q in the frame,

' bearing.

while the gear-wheel O has a spline engagement R with the shank L of the shaft L.

his permits of the longitudinal adjustment of the shaft L without interfering with its rotative drive.

For adjusting the shaft L a suitable operating mechanism is such as a hand-wheel S operati t rough a gear-train -T to actuate pinions engagin racks V on opposite sides of the bearlng he arrangement is such that by rotatin this hand-wheel; the bearing M and shaft E longitudinally, rovided,

are adjusted longitudinally so as to withdraw the roll K from the roll D and permit of engagement of theblank between said roll For holding the blank in engagement with the pivot bearing B a vertically-adjustable clamp W ilsharranged in alinement with said is a threaded shaft W en aging :1, correspondingly threaded bearing in the frame and o erated by a hand-wheel W An anti-friction ball or roller thrust bearing W is preferably placed between the shaft W and clamp W and a similar anti-friction thrust bearing X is arranged between the pivot B and its supporting caring B.

With the construction as described in op eration the blank to be rolled which has been previously centrally cupped for engagement with the pivot B, is heated and placed on said pivot while the roll K is withdrawn The hand-wheel S is then operated to lower the roll K, and rotary motion is simultaneously imparted to both the rolls K and D- described. This will through the mechanism concentric to its axis so as to roll the blank clamp is raised or lowered byreduce the thickness of the portion in contact with the rolls and to enlarge the diameter. Disengagement of the blank durin this operation is prevented by the clamp which holds the cupped portion down upon the pivot bearing B, while the anti-friction end-thrust bearings W and X permit of free rotation. When the blank is sufficiently thinned the roll K is a ain withdrawn, the clamp W released and tie blank disengaged and another blank inserted.

Instead of a single pair of rolls I preferably have at least two pair with differently fashioned contours. us, as shown, the rolls K and D on the left correspond to the rolls K and D on the right with the exception of a change in contour.

Thisas -ting-a blank with its axis of rotation ing through the point of interseqtion o ythe ages of said rolls and a commqn means -"for adjusting one of said-rolls axially toward 'or from the eoiiperating-roll.

2. The combination with a pair of eonieal driven rolls relatively adjustable toward-or from each "other with their agres'intersecting in a fixed point, a clamp for supportin a blank -between said rolls, and a, -.-revolu le support for said plamlp having itsnxis of rotation intersecting t e point of intersection ofthe axes of said rolls.

3. The combination with a pair of conical driven rolls, of a revoluble worksuppert hmqing'its axis of rotation intersecting the axesof said I'Olls in a fixed point, said worka cupped support'being adapted to enfin th l B e a r e hub member on the blank to oil hetiwen said-rolls, a clamp for-holdin said blank-upon said revoluble support, an antifriotionbearings for said support and clamp to permit the free rotation 0 said blank.

,4. Theeombination with a pairof-pqni a1 driven rolls, of supporting shafts there 01 extending from the large ends thereof, bearings for said shafts, a frame on which said bearings are mounted, guides for the bearings of one of said shafts permitting adj ustment thereof longitudinally of the shaft,

members oppositely projectingfromsaid adjus table member, and means acting through both of said members for adjusting the hearing longitudinally.

5. The combination with -two airs of corneal-rolls, of a non-adjustable pivot disposed between corresponding members of said pairs, said members being likewise nonadjustable, a eoiiperating pivot adjustable to or from the first-mentioned pivot and disposed betweenthe other two rolls of said pairs, "the rolls at each side of the adjustable pivot member being adjustable to or from their fellows and'being 'formed-to act difierentialiy upon substantially the same portion of a blank.

In testimony whereof I aifix my signature.

ALDEN L. PUTNA'M. 

